US3606766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold finger article composed of compressed and sintered fine gold powder and a refractory oxide
Assignee: Engelhard Minerals and Chemicals Corp
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Filing: 1969-06-26
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Granted: 1971-09-21
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Expires: 1989-06-26
Abstract
Abstract A GOLD FINGER RING COMPOSED OF COMPRESSED AND SINTERED FINE GOLD POWDER HAVING UNIFORMLY DISPERSED THERETHROUGH FROM 0.03% TO 0.2% OF REFRACTORY OXIDE PARTICLES HAVING A SIZE BETWEEN 0.5 AND 5 MICRONS.
Inventors
- 👤 James S Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
A; A44; A44C; A44C9/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097; Y10T428/12139; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12889
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |